//
//  UIButton+CodeDown.m
//  NewProject
//
//  Created by admin on 2017/6/20.
//  Copyright © 2017年 李航飞. All rights reserved.
//

#import "UIButton+CodeDown.h"

@implementation UIButton (CodeDown)
- (void)startCodeDownWithEndTitle:(NSString *)endTitle cdoeTime:(int)codeTime endClick:(void(^)())endClick {
    
    
    __block int timeout= codeTime; //倒计时时间
    
    dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
    
    dispatch_source_t _timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0,queue);
    
    dispatch_source_set_timer(_timer,dispatch_walltime(NULL, 0),1.0*NSEC_PER_SEC, 0); //每秒执行
    
    dispatch_source_set_event_handler(_timer, ^{
        
        if(timeout <= 0){ //倒计时结束，关闭
            
            dispatch_source_cancel(_timer);
            
            dispatch_async(dispatch_get_main_queue(), ^{
                
                //设置界面的按钮显示 根据自己需求设置
                
                [self setTitle:endTitle forState:UIControlStateNormal];
                
                self.userInteractionEnabled = YES;
                
            });
            if(endClick){
                endClick();
            }
            
            
        }else{
            
            //            int minutes = timeout / 60;
            
            int seconds = timeout % (codeTime + 1);
            NSString *strTime;
            
            strTime = [NSString stringWithFormat:@"%.2ds", seconds];
            
            dispatch_async(dispatch_get_main_queue(), ^{
                
                //设置界面的按钮显示 根据自己需求设置
                
                [UIView beginAnimations:nil context:nil];
                
                [UIView setAnimationDuration:1];
                
                [self setTitle:[NSString stringWithFormat:@"%@",strTime] forState:UIControlStateNormal];
                [UIView commitAnimations];
                
                self.userInteractionEnabled = NO;
                
            });
            
            timeout--;
        }
    });
    
    dispatch_resume(_timer);
}

@end
